62d7d94c2e
This commit introduces support for locations as part of the loop annotation attribute. These locations indicate the start and the end of the loop. Reviewed By: gysit Differential Revision: https://reviews.llvm.org/D149858
76 lines
3.0 KiB
C++
76 lines
3.0 KiB
C++
//===- LoopAnnotationImporter.h ---------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the translation between LLVMIR loop metadata and the
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// corresponding MLIR representation.
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//
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//===----------------------------------------------------------------------===//
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#ifndef MLIR_LIB_TARGET_LLVMIR_LOOPANNOTATIONIMPORTER_H_
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#define MLIR_LIB_TARGET_LLVMIR_LOOPANNOTATIONIMPORTER_H_
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#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
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#include "mlir/Target/LLVMIR/ModuleImport.h"
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namespace mlir {
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namespace LLVM {
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namespace detail {
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/// A helper class that converts llvm.loop metadata nodes into corresponding
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/// LoopAnnotationAttrs and llvm.access.group nodes into
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/// AccessGroupMetadataOps.
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class LoopAnnotationImporter {
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public:
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LoopAnnotationImporter(ModuleImport &moduleImport, OpBuilder &builder)
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: moduleImport(moduleImport), builder(builder) {}
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LoopAnnotationAttr translateLoopAnnotation(const llvm::MDNode *node,
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Location loc);
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/// Converts all LLVM access groups starting from node to MLIR access group
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/// operations mested in the region of metadataOp. It stores a mapping from
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/// every nested access group nod to the symbol pointing to the translated
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/// operation. Returns success if all conversions succeed and failure
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/// otherwise.
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LogicalResult translateAccessGroup(const llvm::MDNode *node, Location loc,
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MetadataOp metadataOp);
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/// Returns the symbol references pointing to the access group operations that
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/// map to the access group nodes starting from the access group metadata
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/// node. Returns failure, if any of the symbol references cannot be found.
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FailureOr<SmallVector<SymbolRefAttr>>
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lookupAccessGroupAttrs(const llvm::MDNode *node) const;
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/// The ModuleImport owning this instance.
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ModuleImport &moduleImport;
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private:
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/// Returns the LLVM metadata corresponding to a llvm loop metadata attribute.
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LoopAnnotationAttr lookupLoopMetadata(const llvm::MDNode *node) const {
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return loopMetadataMapping.lookup(node);
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}
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void mapLoopMetadata(const llvm::MDNode *metadata, LoopAnnotationAttr attr) {
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auto result = loopMetadataMapping.try_emplace(metadata, attr);
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(void)result;
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assert(result.second &&
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"attempting to map loop options that was already mapped");
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}
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OpBuilder &builder;
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DenseMap<const llvm::MDNode *, LoopAnnotationAttr> loopMetadataMapping;
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/// Mapping between original LLVM access group metadata nodes and the symbol
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/// references pointing to the imported MLIR access group operations.
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DenseMap<const llvm::MDNode *, SymbolRefAttr> accessGroupMapping;
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};
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} // namespace detail
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} // namespace LLVM
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} // namespace mlir
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#endif // MLIR_LIB_TARGET_LLVMIR_LOOPANNOTATIONIMPORTER_H_
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